﻿// The Nova Project by Ken Beckett.
// Copyright (C) 2007-2012 Inevitable Software, all rights reserved.
// Released under the Common Development and Distribution License, CDDL-1.0: http://opensource.org/licenses/cddl1.php

using System.Collections.Generic;
using System.Windows.Media;

using Nova.CodeDOM;

namespace Nova.UI
{
    /// <summary>
    /// The view model for a <see cref="CodeDOM.PropertyDeclBase"/>.
    /// </summary>
    public abstract class PropertyDeclBaseVM : BlockStatementVM
    {
        #region /* FIELDS */

        protected ExpressionVM _explicitInterfaceExpression;
        protected ExpressionVM _typeVM;

        #endregion

        #region /* CONSTRUCTORS */

        /// <summary>
        /// Create a view model instance for the specified <see cref="CodeDOM.PropertyDeclBase"/>.
        /// </summary>
        protected PropertyDeclBaseVM(PropertyDeclBase propertyDeclBase, bool isDescription, Dictionary<CodeObject, CodeObjectVM> dictionary)
            : base(propertyDeclBase, isDescription, dictionary)
        {
            if (PropertyDeclBase.IsExplicitInterfaceImplementation)
                _explicitInterfaceExpression = (ExpressionVM)CreateVM(propertyDeclBase.ExplicitInterfaceExpression, isDescription, dictionary);
            _typeVM = (ExpressionVM)CreateVM(propertyDeclBase.Type, false, dictionary);
        }

        #endregion

        #region /* PROPERTIES */

        /// <summary>
        /// The underlying <see cref="CodeDOM.PropertyDeclBase"/> model.
        /// </summary>
        public PropertyDeclBase PropertyDeclBase
        {
            get { return (PropertyDeclBase)CodeObject; }
        }

        /// <summary>
        /// The type of the property.
        /// </summary>
        public ExpressionVM TypeVM
        {
            get { return _typeVM; }
        }

        #endregion

        #region /* METHODS */

        #endregion

        #region /* RENDERING */

        public static readonly Brush StaticBorderBrush = Brushes.PaleTurquoise;
        public static readonly Brush StaticBackgroundBrush = Brushes.LightCyan;

        public override Brush BorderBrush
        {
            get { return StaticBorderBrush; }
        }

        public override Brush BackgroundBrush
        {
            get { return StaticBackgroundBrush; }
        }

        public override int BorderVPad
        {
            get { return 2; }
        }

        protected override void RenderPrefix(CodeRenderer renderer, RenderFlags flags)
        {
            renderer.RenderText(ModifiersHelpers.AsString(PropertyDeclBase.Modifiers), KEYWORD_BRUSH, this);
        }

        protected override void RenderStatement(CodeRenderer renderer, RenderFlags flags)
        {
            RenderFlags passFlags = (flags & RenderFlags.PassMask);
            if (_typeVM != null)
                _typeVM.Render(renderer, passFlags | RenderFlags.IsPrefix);
            if (flags.HasFlag(RenderFlags.Description) && ParentVM is TypeDeclVM)
            {
                ((TypeDeclVM)ParentVM).RenderName(renderer, flags);
                DotVM.RenderDot(renderer, this);
            }
            if (PropertyDeclBase.IsExplicitInterfaceImplementation)
                _explicitInterfaceExpression.Render(renderer, passFlags & ~(RenderFlags.Description | RenderFlags.ShowParentTypes));
            else
                renderer.RenderText(PropertyDeclBase.Name, IDENTIFIER_BRUSH, this);
        }

        public override void UnRender()
        {
            if (_typeVM != null)
                _typeVM.UnRender();
            base.UnRender();
        }

        #endregion
    }
}
